No. Page 



24 Air/Water temperature differences, 1980, 



for the seaward end of the FRF pier 62 



25 Water visibility, 1980, for the seaward end of the FRF pier ... 64 



26 Distribution of visibility measurements, 1980, at the FRF .... 64 



27 Surface current speed, 1980, at 



the seaward end of the FRF pier 65 



28 Surface current speed and direction, 1980, 



measured 500 m updrift of the FRF pier 66 



29 FRF bathymetry for October 1980 67 



30 Pier profile envelopes, April-September 1980 69 



31 Pier profile envelopes, January-March 



and October-December 1980 70 



32 Bottom elevation changes along the FRF pier, 1980 71 



33 Beach photographs looking north from the FRF pier 72 



34 Sample aerial photograph of the FRF taken 16 July 1980 74 



35 RSA-determined mean grain size of the foreshore 



samples taken 500 m north of the FRF pier in 1980 77 



36 Sediment sample locations for October 1980 survey 79 



37 Mean sediment grain size and position 



along the October 1980 survey line 80 



